(19)

(11)

EP 0 077 819 A1

(12)

(43) Date of publication: 04.05.1983 Bulletin 1983/18 (21) Application number: 82901757.0 (22) Date of filing: 27.04.1982

(51) International Patent Classification (IPC):  B01D 15/ 02( . ) B01D 29/ 11( . ) B01J 19/ 18( . ) B01D 17/ 02( . ) B01J 8/ 10( . ) B01J 19/ 24( . ) (86) International application number: PCT/US1982/000533 (87) International publication number: WO 1982/003796 (11.11.1982 Gazette 1982/27)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 04.05.1981 US 19810260093 (71) Applicant: SEAPOWER, INC. Weymouth, MA 02188 (US)	(72) Inventor: BENSON, Robert A. Cohasset, MA 02025 (US) (74) Representative: Marsh, Roy David, et al  Brewer & Son 5-9, Quality Court Chancery Lane London WC2A 1HT London WC2A 1HT (GB)